What is "bijvoetite-"

Bijvoetite-(Y) is a very rare rare earth and uranium mineral with the formula (Y,REE)(UO)(CO)O(OH)•39HO. When compared to the original description, the formula of bijvoetite-(Y) was changed in curse of crystal structure redefinition. Bijvoetite-(Y) is an example of natural salts containing both uranium and yttrium, the other examples being kamotoite-(Y) and sejkoraite-(Y). Bijvoetite-(Y) comes from Shinkolobwe deposit in Republic of Congo, which is famous for rare uranium minerals. The other interesting rare-earth-bearing uranium mineral, associated with bijvoetite-(Y), is lepersonnite-(Gd).